In a rail-based solar mounting system, roof attachments support a “rail” or “rack” on which the PV panels are installed. . While solar panels often steal the spotlight, the unsung hero of any successful photovoltaic (PV) installation is the solar mounting rail system. This critical structural component is responsible for securely fastening your panels to the roof or ground, ensuring optimal angle for maximum energy. . SOLARMOUNT® is the trusted rail-based racking system for residential and commercial solar installs. Built for lasting performance and proven in the field, it offers flexible design options, reliable structural strength, and a clean finished look. It provides a variety of clamp options tailored to. . Designed with contractors, Pegasus Rail makes every aspect of solar installation better. From the warehouse to the jobsite, from the box through a lifetime of service: Simple. One clamp for 30-40mm panels, mids and ends.